{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://git.octoturge.com/Continuum/continuum-schemas/raw/branch/main/schemas/continuum/common/envelope.schema.json",
  "title": "MessageEnvelope",
  "description": "Row provenance shared by the continuum/v1 domain types that $ref it: vendor, material, spool, printer_info, firmware_info and module_info. The _by fields are the actor's id, not a timestamp - they were typed as date-time here, copied from the _at lines above them, which would have rejected every real value the moment anything started validating against this.",
  "type": "object",
  "properties": {
    "id": { "type": "string", "format": "uuid" },
    "created_at":  { "type": "string", "format": "date-time" },
    "created_by":  { "type": "string", "format": "uuid" },
    "updated_at":  { "type": "string", "format": "date-time" },
    "updated_by":  { "type": "string", "format": "uuid" }
  }
}